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Plantronics APP-51 EHS Cable

The Plantronics APP-51 is an electronic hookswitch (EHS) cable for Polycom phones. The APP-51 is designed for use with Plantronics headsets in the Savi 700 series, Savi Office series and CS500 series.

The Plantronics APP-51 EHS cable allows you to take calls and end calls by the push of a button on your Plantronics headset even when you are not within arm's range of the phone, eliminating the need for a HL10 Handset Lifter.

The Plantronics APP-51 is compatible with the following Polycom phone models:

• Polycom IP 320/321*
• Polycom IP 330/331*
• Polycom IP 335
• Polycom IP 430
• Polycom IP 450
• Polycom IP 550
• Polycom IP 560
• Polycom IP 650
• Polycom IP 670
• Polycom VVX 500

*Polycom IP 320/321 and IP 330/331 require 2.5mm to RJ-9 converter cable to connect to the headset port